package kr.hkit.powerjava.chapter25;

public class QuizProtocol {
	private static final int WATTING = 0;
	private static final int PROBLEM=1;
	private static final int ANSWER=2;
	private static final int NUMPROBLEMS=3;
	
	private int state = WATTING;
	private int currentProblem =0;
	
	private String[] problems = {"네트워크 처리 패키지는?","자바 최신 버전은?",
			"인터넷에서 컴퓨터를 식별하는 주소는"};
	private String[]answers= {"java.io",
								"1.7",
								"IP주소"};
	public String process(String theInput){
		String theOutput = null;
		
		switch(state){
		case QuizProtocol.WATTING:
			theOutput = "퀴즈를 시작합니다.(y/n)";
			state = QuizProtocol.PROBLEM;
			break;
		case QuizProtocol.PROBLEM:
			if(theInput.equalsIgnoreCase("y")){
			theOutput = "퀴즈를 시작합니다.(y/n)";
			state = QuizProtocol.ANSWER;
			}else{
				state = state = QuizProtocol.WATTING;
				theOutput = "quit";
			}
			break;
		
		case QuizProtocol.ANSWER:
			if(theInput.equalsIgnoreCase(answers[currentProblem])){
			theOutput = "정답입니다. 계속하시겠습니까?(y/n)";
			state = QuizProtocol.PROBLEM;
			}else{
				theOutput = "오답입니다. 계속하시겠습니까?(y/n)";
			}	
		}
		}
	}
}
